Machine Design
The objective of idler pulley in belt drive is to

Increase the power transmission capacity
Increase the wrap angle and belt tension
Decrease the tendency of belt to slip
All the above objectives

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Spring stiffness is

Its ability to absorb shocks
Its capability of storing energy
Load required to produce unit deflection
Ratio of coil diameter to wire diameter

ANSWER DOWNLOAD EXAMIANS APP